There is something quietly satisfying about a September morning spent along a hedge bank, filling a basket with sloes the colour of an evening sky and crab apples no bigger than a golf ball. Half an hour in the kitchen and those hedgerow fruits become jars of deep ruby jelly, a bottle of sloe gin for Christmas, and a spiced ketchup that will see you through to spring. Traditional preserving is not fussy — it simply asks for sharp eyes, a set of scales and a little patience.

Know Your Fruit Before You Pick

Safety comes first, and the rule is simple: if you cannot identify a berry or fruit with absolute certainty, leave it where it grows. Take a good field guide with you, ideally with photographs as well as drawings.

• Sloes are the fruit of the blackthorn, a small purple-black berry roughly a centimetre across with a pale, powdery bloom. The branches end in sharp thorns, so pick with care. Taste one and you will understand why it is rarely eaten raw — the astringency makes your mouth feel like sandpaper.
• Elderberries hang in heavy, drooping umbels from late summer, each berry tiny and blue-black. The leaves and bark smell unpleasant when crushed. Do not confuse elder with other umbel-bearing plants growing in wet ground, several of which are poisonous.
• Crab apples are small, round and hard, hanging singly or in pairs with a stalk. They are intensely sour, which is precisely what makes them such useful jam fruit.

Forage above waist height where dogs may have been, avoid busy roadside verges and field edges that may have been sprayed, and always ask permission if you are not on a public right of way. Take only what you need and leave at least half for the birds and small mammals — they depend on this crop far more than we do.

Timing and Preparation

• Sloes are ready from late September through November. Traditionally they are picked after the first frost, which softens the skin; if you pick early, freeze them for twenty-four hours instead.
• Elderberries are best in late August and early September, when clusters hang heavy and the berries are glossy black. Strip them from the stalks with the tines of a fork. Always cook elderberries before eating, as raw berries and stalks can cause stomach upset.
• Crab apples arrive in September and October. Unblemished windfalls are perfectly good.

Rinse everything in cold water, discard stalks, leaves and any fruit that is bruised or mouldy, then weigh after preparing. Clean, dry jars matter more than any other equipment, so start collecting them well in advance.

Sloe Gin and Sloe Jelly

For sloe gin, fill a large jar with 500g of prepared sloes, add 250g of caster sugar and pour over one litre of gin. Seal, shake well, then shake every few days for the first fortnight and weekly thereafter. It is drinkable after three months; leave it a year and it becomes something remarkable. Strain through muslin and bottle.

The strained fruit, or a fresh batch, makes a beautiful jelly. Simmer the sloes with just enough water to cover until the skins collapse, then tip into a jelly bag and let it drip overnight — never squeeze it, or the jelly will cloud. Measure the juice and allow 450g of preserving sugar per 600ml. Heat gently until the sugar dissolves, then boil hard until a spoonful wrinkles on a chilled saucer.

Crab Apple Jelly and Hedgerow Ketchup

Crab apples are rich in pectin, so they set beautifully with little fuss. Halve 1.8kg of fruit, cover with 1.2 litres of water and simmer for about forty minutes until soft. Strain overnight, then use 450g of sugar per 600ml of juice. A sprig of rosemary or a handful of rosehips added during the simmer gives a lovely depth of flavour.

For a spiced hedgerow ketchup, simmer 900g of chopped crab apples and 450g of elderberries with 300ml of vinegar, 200g of soft brown sugar and a spice bundle of cloves, allspice, peppercorns and ginger. When everything is soft, rub through a sieve or pass through a food mill, then return to the pan and reduce for twenty to thirty minutes until it coats the back of a spoon. Bottle hot. It keeps for six months unopened and transforms sausages, game and strong cheese.

Elderberry Cordial and Syrup

Simmer 900g of stripped elderberries with 300ml of water for twenty-five minutes, mashing occasionally. Strain, then add 450g of sugar per 600ml of juice along with a few cloves or a star anise. Boil for five minutes, pour into sterilised bottles and seal. A spoonful in hot water makes a warming winter drink, and the same syrup is excellent spooned over yoghurt or used to loosen a rich fruit cake.

Setting Points, Sterilising and Storage

Wash jars in hot soapy water, rinse well, and dry them in a low oven at 140°C for fifteen minutes before filling while still warm. To test for a set, chill a saucer in the freezer, drop on a teaspoon of jam, and push it with your finger — if the surface wrinkles, it is ready. Jams and jellies made with sloes, crab apples and elderberries should be sealed, labelled with the date, and stored somewhere cool and dark, where they will keep for at least a year. Preserving is a slow craft learned by doing, and the hedgerow offers a generous place to begin.